As far as your package is concerned, Flores and Familia would probably be an early starting point for a deal. The Mets are not at the stage where they can afford to deal too many prospects, even in a more realistic scenario for someone who is reportedly available.
In regards to D'Arnoud, Brian Erni mentioned his name on the MetsBlog Podcast last week as a possibility for the Mets. The Blue Jays acquired John Buck as part of their deal with Miami and sent Jeff Mathis to the Marlins in the process, leaving Toronto with D'Arnoud, Buck, and J.P. Arencebia. D'Arnoud is Toronto's top prospect and is said to possess everything a team would want in a young catcher: the ability to play the position at a high level all while hitting for both average and power. Catchers who project like that are hard to come by and incredibly difficult to develop considering if a catcher can hit, he is often moved from the position to preserve him for the long haul. While I would love for the Mets to be able to acquire D'Arnoud, Arencebia might be a more realistic target, and could potentially be had for less than what it would take to land D'Arnoud. In fact, the wrong move for the Blue Jays might be to trade D'Arnoud away, given his talents are so hard to come by.
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